Differential phosphoproteomics of FGF signalling: identification of Src family kinase-mediated phosphorylation events.

Cunningham, D.L, Sweet, Steve, Cooper, H.J and Hearth, J.K (2010) Differential phosphoproteomics of FGF signalling: identification of Src family kinase-mediated phosphorylation events. Journal of Proteome Research, 9 (5). pp. 2317-2328. ISSN 15353893

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Abstract

Activation of signal transduction by the receptor tyrosine kinase, fibroblast growth factor receptor (FGFR), results in a cascade of protein-protein interactions that rely on the occurrence of specific tyrosine phosphorylation events. One such protein recruited to the activated receptor complex is the nonreceptor tyrosine kinase, Src, which is involved in both initiation and termination of further signaling events. To gain a further understanding of the tyrosine phosphorylation events that occur during FGF signaling, with a specific focus on those that are dependent on Src family kinase (SFK) activity, we have applied SILAC combined with chemical inhibition of SFK activity to search for phosphorylation events that are dependent on SFK activity in FGF stimulated cells. In addition, we used a more targeted approach to carry out high coverage phosphopeptide mapping of one Src substrate protein, the multifunctional adaptor Dok1, and to identify SFK-dependent Dok1 binding partners. From these analyses we identify 80 SFK-dependent phosphorylation events on 40 proteins. We further identify 18 SFK-dependent Dok1 interactions and 9 SFK-dependent Dok1 phosphorylation sites, 6 of which had not previously been known to be SFK-dependent. © 2010 American Chemical Society.

Item Type: Article
Schools and Departments: School of Life Sciences > Sussex Centre for Genome Damage and Stability
Subjects: Q Science
Related URLs:
Depositing User: Steve Sweet
Date Deposited: 06 Feb 2012 19:39
Last Modified: 11 Oct 2012 09:41
URI: http://srodev.sussex.ac.uk/id/eprint/21653
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